Enceladus (E-22) Flyby
4,999 km (3,106 mi)
Dec 19 2015 (SCET)
Water World Enceladus is subject to forces that heat its interior to this very day. This results in its famous south polar water jets, which are just visible above the moon’s dark, southern limb, and perhaps even a sub-surface ocean.
Scientists have been exploring Saturn's intriguing moon Enceladus for more than a decade via the Cassini spacecraft. What they've found has surprised them again and again -- here are the top 10 discoveries.